Description
The srs is equipped with a voltage-increase circuit (dc-dc converter) in the center airbag sensor in case the source voltage drops.
When the source voltage drops, the voltage-increase circuit (dc-dc converter) functions to increase the voltage of the srs to a normal working level.
A malfunction in this circuit is displayed differently from other codes, in the fact that no dtcs are recorded. With a normal system code present, the source voltage drop is indicated when the srs warning light comes on.
A malfunction in this circuit is not recorded in the center airbag sensor .
The srs warning light automatically goes off when the source voltage returns to normal.
Wiring diagram
Inspection procedure
Standard voltage
Standard resistance
Standard resistance
Ok: srs warning light does not come on.
End
Disassembly
Hint:
When removing the ornament plate and emblem, heat the
radiator grille, ornament plate and emblem using a heat light.
Standard heating temperature
Notice:
Do not heat the radiator grille, ornament plate and
emblem excessively.
Remove hood to radiator grille seal
Remove th ...
Diagnosis system
Diagnosis
If the skid control ecu detects a malfunction, the abs,
vsc and brake warning lights and the slip, downhill
assist control and auto lsd indicator lights come on in
accordance with the trouble area to warn the driver.
The table below indicates which lights come on when
there ar ...
Steering column assembly
Components
Removal
Caution:
Some of these service operations affect the srs airbag
system. Read the precautionary notices concerning the
srs airbag system before servicing the steering column
(see page rs-1).
Place front wheels facing straight ahead
Disconnect cab ...